Hi fourleafclover82
I have also been seen by Dr Rai at St Mary's :)
I went through the process of getting of all their testing done last year, following my 2 back to back losses. I have to say, I was reassured at the time that I was in good hands- they were thorough and the whole process took less time than I thought. I also read Proff Regan's book last year as part of my research into what the hell's going on. The I read "When a baby dies" which upset me so deeply that I decided to give the related literature a break!
The reality is that, apart from thyroid antibodies St Mary's team didn't find anything and didn't give me any answers to my late or subsequent losses. When discharged last May, I was advised by Dr Quinn that "we should really get on with trying again straight away" (I was 39 then) but that the next pregnancy may not necessarily be the successful one 
DEF not what you want to hear when you're being sent off.
I then got on the TABLET trial which was sadly short lived- as I miscarried for the third time 6 months in the trial, last Nov'.... So he was right in a way as I'm sure they've seen it all before with women trying till they get lucky- as if it's all just a numbers game.
What really pissed me off though was the fact that I miscarried third time around under their care and although I was in and out of the TABLET trial, they didn't check my thyroid after the third miscarriage and instead I had to go privately this January and discovered that my thyroid function had slumped, with a diagnosis of "an autoimmune compensated hypothyroidism" and my antibodies have also soared (trebled in only 4 months time)
So now Dr S is focusing on stabilizing my thyroid first and looking at what other auto immune issues I may have (of course St Mary's don't even want to entertain the idea of uNKs)... So in hindsight and given my age I should have probably not wasted those 6 months being on the trial and doing nothing but ttc naturally, I should have probably asked for a second opinion, from a clinic/specialist who deals with autoimmune conditions (Shehata, Coventry, ARCG or Lister).
Good luck with it all and keep me posted, I know the thread has gone quiet as apparently a lot of the ladies here are already pg again! Which is a great sign :) But I am on it daily so will be nice to hear from you (and others) too